Ray Church is a medieval church and National Monument. St Fionnán founded this church in the 6th century. Ray stood next to the Ray River, an ancient boundary between the Cenél Luighdech and Cenél Duach. Four 7th-century abbots of Iona were of the Cenél Duach; Ray was almost certainly their home church.
Ray high cross is the largest early medieval stone cross in Ireland. Local lore claims it was made by Columba (521–597) on Muckish to bring to Tory Island, but local saint Fionnán recovered Columba's Gospel Book and he gave the cross to Ray. The cross actually dates to the late 8th century.
The church was destroyed by Oliver Cromwell's soldiers in the 17th century. During Sunday Mass, the entire congregation was slaughtered in the Massacre of Ray (Marfach Ráithe). The dead are buried in a mass grave called Resting Place of the Bones (Lag na gCnámh).
The cross was knocked down in a storm about 1750, and lay broken in the graveyard until it was repaired by the Office of Public Works in the 1970s.
The church is rectangular with wide round-arched windows.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.